How to turn delivery valves?

[Chw]

I was wondering if anyone would be kind enough to explain to me how to turn delivery valves to increase fuel on D1305(same pump as the more common D1105). This is my first time posting on a forum so bare with me

 

[85Hokie]

CHW,

glad to have you here - curious, you want more HP I take it?

 

[Chw]

CHW,

glad to have you here - curious, you want more HP I take it?

Yes, thanks for the warm welcome. I’ve already removed shims from bottom of pump and removed rack screw. I’ve also added a gt1544 turbo making about 10psi. I feel I can benefit from a little more fuel. Egts and intake air temps are manageable at the moment.

 

[Chw]

Here’s a picture of the project.

 

[North Idaho Wolfman]

Sounds like you've made some missteps already, I would suggest you read this thread!
I'm pretty sure, you don't remove the shims (timing), and you don't mess with the internals of the injection pump!

L2501 Turbo: A Journey Defined - The tractor, The comparison, The modification, The results...

Part 1: Background The purpose of this thread is to share the concept, creation, progress and performance of my custom Turbocharged Kubota L2501 HST 4WD tractor. I’ll start by offering my opinions on this tractor, why I bought it, how it’s performed, the advantages and disadvantages, and why I...

www.orangetractortalks.com

 

[Chw]

Sounds like you've made some missteps already, I would suggest you read this thread!
I'm pretty sure, you don't remove the shims (timing), and you don't mess with the internals of the injection pump!

L2501 Turbo: A Journey Defined - The tractor, The comparison, The modification, The results...

Part 1: Background The purpose of this thread is to share the concept, creation, progress and performance of my custom Turbocharged Kubota L2501 HST 4WD tractor. I’ll start by offering my opinions on this tractor, why I bought it, how it’s performed, the advantages and disadvantages, and why I...

www.orangetractortalks.com

I’ve read that, thank you for suggesting it, very helpful stuff. I haven’t messed with the internals of the pump, but I want to. That’s why I’m asking about turning the delivery valves.